Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS4838871 A
Publication typeGrant
Application numberUS 07/164,455
Publication dateJun 13, 1989
Filing dateMar 4, 1988
Priority dateJul 17, 1987
Fee statusPaid
Publication number07164455, 164455, US 4838871 A, US 4838871A, US-A-4838871, US4838871 A, US4838871A
InventorsRonald B. Luther
Original AssigneeLuther Ronald B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Needle guard, and assembly
US 4838871 A
Abstract
A needle guard is provided to protect against accidental needle stick injuries following use, and to provide a cover for the needle when shipping.
The needle guard is rotatably mounted at the base of the needle and defines a longitudinal slot which coincides with the needle. When the needle is ready for use, the needle guard is rotated away from the needle; following use, the guard is rotated back to partially enclose the needle. A slotted cylinder is then moved forwardly along the needle guard and is rotated for a short distance to lock and permanently enclose the needle, and particularly the tip portion thereof.
In another embodiment, a rotatable sleeve is provided to interlock with the needle guard and permanently enclose the needle.
The device may be adapted for use with over-the-needle catheters, and its use facilitates attachment of other devices such as vacutainers to the needle and hub assembly.
Images(6)
Previous page
Next page
Claims(5)
I claim:
1. An assembly of a needle guard for a hub and attached needle, comprising:
an elongate guard member mounted on the hub for rotatable movement thereon, the guard member including an elongate, longitudinal slit adapted to interfit with the needle prior to use, the guard member defining engaging means for a rotatable locking member; and,
a locking member mounted on the guard member, and adapted for rotational movement therealong, the locking member providing an elongate slit coinciding with the slit of the guard member; whereby:
i. prior to use, the needle is adapted to interfit into the slit of the guard member;
ii. during use, the guard member and attached locking member are adapted to rotate away from the needle;
iii. following use, the guard member and attached locking member are adapted to rotate back to interfit with the used needle; and,
iv. the locking member is adapted to be rotated around the needle guard and rotatably locked therewith while moving the locking slit out of alignment with, and to occlude the needle, thereby protecting against accidental needle stick injuries.
2. The assembly of claim 1, including an elongate locking projection defined along the guard member to engage the locking member, thereby.
3. The assembly of claim 2, including a U-shaped locking member adapted to engage with the locking projection of the guard member, and lock therewith.
4. The assembly of claim 1, in which a flange member is provided depending from the hub, the guard member being rotatably mounted on the flange.
5. The assembly of claim 3, in which the guard member and locking member are constructed of an injection molded plastic.
Description

This application is a continuation-in-part of U.S. Ser. No.: 074,693, filed July 17, 1987 now U.S. Pat. No. 4,747,836.

BACKGROUND OF THE INVENTION

This invention relates to a new and improved needle guard, and the assembly of a guard with a syringe needle, I.V. needle, and the like designed to protect against needle stick injuries.

Problems concerning accidental needle sticks are of immediate and increasing concern since they can cause infection such as hepatitis and the AIDS virus.

One type of assembly which provides a needle and guard to prevent these types of injuries is sold by ICU Medical, Inc. However, that particular device requires an extra length of needle and employs a complicated piece of injection molded plastic as the needle guard.

It would be preferred to provide a guard for a needle and assembly thereof, which requires a shorter needle than the ICU Medical device, and having a length which is customarily used for its purpose.

Also, it would be desireable to use fewer and simpler injection molded plastic components for the needle guard. This would of course reduce the cost and enable the device to be handled easier. In addition, if the needle guard could itself be used during operation of the device, this would be an added benefit.

Furthermore, a needle guard, needle and assembly therefor is desired which can be used with syringes having either a plain tapered or threaded hub; this reduces inventory requirements.

Finally a locking guard, needle and assembly is desired which provides a double lock effect, which naturally improves the safety features of the device.

THE INVENTION

According to the invention, a locking guard, needle and assembly is provided for a needle comprising a needle guard rotatably mounted at the hub portion of the needle. A longitudinal slit is defined along the guard to enable it to partially enclose the needle during transportation, storage and just prior to use.

A slotted locking ring is rotationally mounted on the locking guard, and subsequent to use, the locking ring is moved forwardly so that the slots engage guide lugs on the locking guard. This enables the ring to rotate around the guide lugs and occlude the needle and tip. The assembly can then be safely discarded.

In another embodiment, a rotatable sleeve is provided to interlock with the needle guard and permanently enclose the needle.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1, 1a and 1b are exploded, perspective views of the needle, attached hub, rotatable needle guard and locking ring;

FIG. 2 is an external view in side elevation of the locking ring engaged with the needle guard;

FIG. 3 is an external plan view of the rotatable portion of the needle guard attached to the needle hub;

FIG. 4 is an external view in side elevation showing the same area as FIG. 3;

FIG. 5 is an external view in side elevation showing the needle guard rotatably moved out of its protective position from the needle to enable use of the needle;

FIGS. 6 and 7 are external views in side elevation showing another embodiment of this invention;

FIG. 8 is a view in sectional side elevation showing the assembled device of FIGS. 1, 1a and 1b;

FIG. 9 is an external view in sectional side elevation showing the entire assembled device of the embodiments of FIGS. 6 and 7;

FIG. 10 is a cross sectional view of the device in end elevation showing the needle, needle guard and locking ring when assembled, the locking ring and guard partially enclosing the needle;

FIG. 11 is a cross sectional view in end elevation of the device following needle use, and after the locking ring has been rotated to protect the needle from a needle stick injury.

FIG. 12 is an external side elevation view showing another embodiment of a needle guard body of this invention;

FIG. 13 is a top plan view of FIG. 12;

FIG. 14 is a cross sectional view taken along lines 14--14 of FIG. 12;

FIG. 15 is a cross sectional view showing the interior portion of the needle guard taken along lines 15--15 of FIG. 12, with background omitted for clarity;

FIG. 16 is a cross sectional view of the needle guard shown in the unlocked position;

FIG. 17 is a cross sectional view of the needle guard in the locked position;

FIG. 18 is a cross sectional view of the sleeve portion of the needle guard shown in FIGS. 16 and 17; and;

FIG. 19 is an external view in side elevation showing the rotatable sleeve portion of the device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS:

The needle assembly 10, including a needle guard and closure ring, are shown in an exploded view in FIGS. 1, 1a and 1b. The needle 11 is shown attached to a hub 12 in a conventional manner, and the hub is provided with attached trunnion studs 13, 14. The needle guard portion 16 of the assembly is shown in FIG. 1, and comprises a body length 17 defining a longitudinal slit 18 into which fits the needle. The rotatable end of the needle guard provides trunnion arms 19, 20 defining trunnion bores 21, 22 which are rotatably mounted on the trunnion studs 13, 14. Locking shoulders 23, 24 are defined on the body 17 to provide one mode of engagement for the locking ring, and guide lugs 25, 25 are provided on the body 17 to engage the locking ring and form another mode of engagement therewith. Both the needle guard and locking ring are constructed of an injection molded plastic such as PVC, polyethylene, polypropylene, nylon, etc., and this of course enables the components to be readily formed. The closure ring 26 is mounted along the needle guard, and defines a slit 27 which coincides with the slit 18 and the needle 11. Locking slots 28, 29 are formed along the locking ring and are adapted to engage the guide lugs 25, 25 when the locking ring is moved forwardly along the needle guard. Detents, one detent 30 being shown, are provided at the end of each locking slot to ensure engagement with each lug 25, 25 and prevent the closure ring from being loosened out of engagement.

FIG. 2 illustrates the engagement of the locking ring with the needle guard following forward movement along the needle guard and rotational movement around the guide lugs.

Prior to use, such as during transportation, shipping and storage, the device of this invention is shown assembled in FIGS. 3 and 4, in the closed position. When the device is to be used, the needle guard is moved from its closed position, by rotation, to uncover the needle and hub 35. This is shown in FIG. 5, the needle guard being shown in an open position 36. Following use, the needle guard is then rotated back into position to partly surround the needle 11, and the locking ring is then moved forwardly along the needle guard and rotated around the guide lugs 25, 25 to occlude and protect the used needle. The open and closed positions of the closure ring are further illustrated in FIGS. 10 and 11.

It will be appreciated that forward movement of the locking ring 26 along the needle guard 16 will result in the closure ring becoming locked by the locking shoulders 23, 24 of the needle guard. This, of course, will provide another additional means to ensure locking of these two components.

In the retracted position, the needle guard has the capability of functioning as a handle, and this facilitates attachment of devices to the hub such as a `vacutainer`, and removal thereof.

FIGS. 6, 7 and 9 illustrate another embodiment of this invention which enables a greater angle of rotation to be applied to the needle guard. In this embodiment, a hub 41 and attached needle 42 are shown protected by a needle cover 40. This includes a guard body 44 which extends into an offset arm 44a which is attached to a depending arm or flange 43 supported by the hub. Trunnion pins, one such pin 45 being shown, rotatably mount the needle guard 44 at the offset are 44a. As in the first embodiment, the function of the locking ring (not shown) is the same, and the locking shoulder 46 on the needle guard shows the approximate location of the locking components.

In FIG. 7, the open position 47 of the needle guard is shown, and it will be noted that this embodiment enables the needle guard to be almost completely out of the user's way, compared to the embodiment of FIG. 1, et seq.

FIGS. 12-19 illustrate another embodiment of this invention in which the locking action of the device is effected by rotating an external closure sleeve around the needle guard body and locking these two components by means of a ratchet engagement formed therebetween.

The needle guard 50 shown in FIG. 12 includes a guard body 51 which extends into an offset arm 51a that is attached to a dependant arm or flange (not shown) supported by a hub, in the same manner as in FIGS. 6-9. The offset arm 51a may be rotatably mounted by means of a pin 52 and bore 53 connection, or by round lugs rotating along recessed surfaces. End stops 54, 55 are molded at each end of the guard body to secure the closure sleeve. As shown in FIG. 15, the guard body 51 defines a U-shaped slot 56 having relatively straight sidewalls 57, 58 and a curved bottom portion 59 into which fits a curved bottom portion 59. An I.V., syringe, or other needle 60 is sized to fit into the bottom 59 of the slot 56.

The outer portion of the guard body 51 defines curved surfaces 61, 62 which form relatively well defined edges 63, 64 at the boundaries between the respective sidewalls 57, 58. Flat shoulder portions 65, 66 and 67 are defined around the exterior of the guard body. A U-shaped exterior wall surface 68 is defined between shoulders 65 and 67.

As shown in FIG. 19, the rotatable, external closure sleeve 70 defines external reinforcing ribs 71, a tab 72 for rotating the sleeve and a central reinforcing ridge 73. Each end 74, 75 of the sleeve is rounded and makes a fairly close fit against the end stops 54, 55 of the guard body 51.

The interior of the closure sleeve 70 is shown in FIGS. 16, 17 and 18 and comprises an approximately three-quarter open, elongate slot portion 81 defining edge members 82 and 83, a projecting ratchet-shaped portion 83, and a U-shaped curved portion 84 defined between the edge member 83 and the ratchet portion 84. In the assembled and open position shown in FIG. 16, the ratchet portion 84 fits into shoulder 65, curved portion 86 of the sleeve fits along wall surface 68 of the guard body, and edge member 83 fits along shoulder 67.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4425120 *Apr 15, 1982Jan 10, 1984Sampson Norma AShielded hypodermic syringe
US4693708 *Oct 16, 1986Sep 15, 1987Wanderer Alan ACombination needle shield/needle guard device for a hypodermic syringe with a permanently attached needle
US4747836 *Jul 17, 1987May 31, 1988Luther Medical Products, Inc.Needle guard, and assembly
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4944397 *Sep 29, 1989Jul 31, 1990University Medical Center, Inc.Disposable covered needle for syringe
US4982842 *Jun 4, 1990Jan 8, 1991Concord/PortexSafety needle container
US5000740 *Apr 10, 1989Mar 19, 1991Critikon, Inc.Catheter with needle guard
US5011475 *Jun 2, 1989Apr 30, 1991Olson Richard AProtector for intravenous and syringe needles
US5116325 *May 31, 1991May 26, 1992Paterson Donald WNeedle assembly
US5139489 *Mar 4, 1991Aug 18, 1992Smiths Industries Medical Systems, Inc.Needle protection device
US5152751 *Dec 4, 1990Oct 6, 1992Kozlowski David JHypodermic needle safety shield
US5154285 *Dec 20, 1991Oct 13, 1992Smiths Industries Medical Systems, Inc.Needle assembly holder with rotatable safety sheath member
US5232454 *Aug 1, 1990Aug 3, 1993Smiths Industries Medical Systems, Inc.Safety needle container
US5232455 *Jan 7, 1991Aug 3, 1993Smiths Industries Medical Systems, Inc.Syringe with protective housing
US5242417 *Jan 13, 1992Sep 7, 1993Paudler Gary MSelf closing hinged syringe guard
US5269765 *Mar 10, 1992Dec 14, 1993Injectimed, Inc.Methods of manufacture of safety sleeves for medical injection devices
US5312367 *May 20, 1993May 17, 1994Nathan Rasa NNeedle cover assembly for syringes
US5312369 *Jul 26, 1993May 17, 1994Arcusin Carlos ESafety hood for hypodermic needles
US5338311 *Aug 23, 1993Aug 16, 1994Mahurkar Sakharam DHypodermic needle assembly
US5342322 *Dec 6, 1993Aug 30, 1994Rasa N. NathanNeedle cover assembly for syringes
US5374255 *Apr 5, 1994Dec 20, 1994Rasa N. NathanNeedle cover asssembly for syringes
US5376073 *Nov 23, 1992Dec 27, 1994Becton, Dickinson And CompanyLocking safety needle assembly
US5437648 *Aug 24, 1994Aug 1, 1995Becton, Dickinson And CompanyLocking safety needle assembly
US5490841 *Jul 29, 1994Feb 13, 1996Landis; Robert M.Safety sheath device
US5496274 *Aug 29, 1994Mar 5, 1996Becton, Dickinson And CompanyFor secure connection of a piercing element to an intravenous fitting
US5514100 *Apr 19, 1994May 7, 1996Mahurkar; Sakharam D.Hypodermic needle assembly
US5599313 *Feb 3, 1995Feb 4, 1997Becton, Dickinson And CompanyNeedle shield assembly having safety indication features
US5599318 *Aug 29, 1995Feb 4, 1997Becton, Dickinson And CompanyNeedle shield assembly having a releasable lock
US5649622 *Apr 5, 1994Jul 22, 1997Smiths Industries Medical Systems, Inc.Locking safety needle protection system
US5685862 *Dec 18, 1995Nov 11, 1997Mahurkar; Sakharam D.Hypodermic needle assembly
US5836921 *Jan 16, 1996Nov 17, 1998Mahurkar; Sakharam D.Hypodermic needle assembly
US5879338 *Mar 19, 1996Mar 9, 1999Mahurkar; Sakharam D.Needle-syringe assembly for guidewire insertion
US5891105 *Sep 3, 1997Apr 6, 1999Mahurkar; Sakharam D.Hypodermic needle assembly
US5976115 *Oct 9, 1997Nov 2, 1999B. Braun Medical, Inc.Blunt cannula spike adapter assembly
US6056726 *Feb 28, 1995May 2, 2000Isaacson; Dennis RaySelf-contained safety intravenous catheter insertion device
US6117112 *Nov 18, 1997Sep 12, 2000Mahurkar; Sakharam D.Single-use safety syringe
US6156011 *Sep 28, 1999Dec 5, 2000Ruminson; Wallace E.Syringe needle guard
US6156012 *Dec 23, 1999Dec 5, 2000Nnn.LlcNeedle cover assembly for hypodermic syringes
US6280401May 20, 1997Aug 28, 2001Sakharam D. MahurkarHypodermic needle assembly
US6328713Jul 15, 1999Dec 11, 2001Sims Portex Inc.Needle sheath device
US6355021 *Jul 14, 1998Mar 12, 2002Maersk Medical A/SMedical puncturing device
US6500129Jun 14, 2001Dec 31, 2002Sakharam D. MahurkarHypodermic needle assembly
US6592556Jul 19, 2000Jul 15, 2003Tyco Healthcare Group LpMedical needle safety apparatus and methods
US6648855Jun 14, 2002Nov 18, 2003Becton, Dickinson And CompanySafety needle assembly
US6695819Oct 19, 2001Feb 24, 2004Terumo Medical CorporationSafety needle assembly
US6699217Jun 12, 2002Mar 2, 2004Becton, Dickinson And CompanySafety needle assembly
US6719737May 13, 2002Apr 13, 2004Terumo Medical CorporationSafety needle assembly
US6780169Jun 12, 2002Aug 24, 2004Becton, Dickinson And CompanySafety shield assembly
US6796968Mar 13, 2001Sep 28, 2004Tyco Healthcare Group LpReaccessible medical needle safety devices and methods
US6814717 *Jan 18, 2002Nov 9, 2004Future Top Medical Environmental Technic Co., Ltd.Protecting cap structure for the needle of a syringe
US6840922Dec 13, 2001Jan 11, 2005Unomedical A/SMedical puncturing device
US6949086Jun 11, 2003Sep 27, 2005Tyco Healthcare Group LpSeldinger safety shield for medical needles
US7001363Nov 26, 2002Feb 21, 2006F. Mark FergusonSafety shield for medical needles
US7029461Jun 6, 2002Apr 18, 2006Tyco Healthcare Group LpSafety shield for medical needles
US7070580Apr 1, 2003Jul 4, 2006Unomedical A/SInfusion device and an adhesive sheet material and a release liner
US7115112Sep 1, 2003Oct 3, 2006Unomedical A/SDevice for subcutaneous administration of a medicament to a patient and tubing for same
US7128726Feb 4, 2004Oct 31, 2006Becton Dickinson And CompanySafety needle assembly
US7144389Dec 2, 2002Dec 5, 2006Tyco Healthcare Group, LpSafety shield for medical needles
US7147623Feb 11, 2003Dec 12, 2006Unomedical A/SInfusion device with needle shield
US7163526Jan 8, 2003Jan 16, 2007Becton, Dickinson And CompanyFlashback blood collection needle with needle shield
US7198618Jun 27, 2001Apr 3, 2007Tyco Healthcare Group LpSafety shield for medical needles
US7220249May 29, 2002May 22, 2007Becton, Dickinson And CompanyHinged needle shield assembly having needle cannula lock
US7223258May 24, 2002May 29, 2007Becton Dickinson And CompanySafety shield assembly
US7258680Sep 1, 2003Aug 21, 2007Unomedical A/SDevice for subcutaneous administration of a medicament to a patient
US7300423Nov 19, 2003Nov 27, 2007Tyco Healthcare Group LpSafety device with trigger mechanism
US7320682May 17, 2002Jan 22, 2008Tyco Healthcare Group LpSafety device
US7361159Mar 4, 2002Apr 22, 2008Covidien AgPassive safety shield
US7407493Jun 22, 2004Aug 5, 2008Unomedical A/SContainer for disposable needle or cannula
US7438703Dec 6, 2001Oct 21, 2008Tyco Healthcare Group LpSafety shield for medical needles
US7479131Oct 24, 2002Jan 20, 2009Fenwal, Inc.Biological fluid sampling apparatus, assembly and method
US7481794Sep 9, 2005Jan 27, 2009Unomedical A/SCover
US7481797Nov 3, 2006Jan 27, 2009Mahurkar Sakharam DRetractable needle single use safety syringe
US7537581Dec 12, 2006May 26, 2009Becton, Dickinson And CompanyNeedle shield assembly having hinged needle shield and flexible cannula lock
US7553296Aug 22, 2007Jun 30, 2009Tyco Healthcare Group LpSafety device with trigger mechanism
US7594909Sep 2, 2003Sep 29, 2009Unomedical, A/SApparatus and method for adjustment of the length of an infusion tubing
US7615033Aug 16, 2004Nov 10, 2009Becton, Dickinson And CompanyFlashback blood collection needle
US7621395Jun 8, 2006Nov 24, 2009Unomedical A/SPacking for infusion set and method of applying an infusion set
US7648480Mar 31, 2005Jan 19, 2010Terumo Medical CorporationSafety needle assembly
US7648494Mar 21, 2005Jan 19, 2010Unomedical A/SInfusion set and injector device for infusion set
US7654484Sep 2, 2003Feb 2, 2010Unomedical A/SApparatus for and a method of adjusting the length of an infusion tube
US7802824Nov 26, 2003Sep 28, 2010Unomedical A/SConnecting piece for a tubing
US7854723Jul 3, 2007Dec 21, 2010Becton, Dickinson And CompanyNeedle shield assembly having hinged needle shield
US7862547Oct 21, 2005Jan 4, 2011Tyco Healthcare Group LpSafety shield for medical needles
US7867199Dec 9, 2005Jan 11, 2011Unomedical A/SInserter
US7867200Dec 9, 2005Jan 11, 2011Unomedical A/SInserter
US7918821May 5, 2009Apr 5, 2011Mahurkar Sakharam DUniversal safety syringe
US7967794Dec 7, 2009Jun 28, 2011Terumo Medical CorporationSafety needle assembly
US7985199Feb 22, 2006Jul 26, 2011Unomedical A/SGateway system
US8012126Oct 29, 2007Sep 6, 2011Unomedical A/SInfusion set
US8038654Feb 26, 2007Oct 18, 2011Becton, Dickinson And CompanySyringe having a hinged needle shield
US8062250Dec 23, 2004Nov 22, 2011Unomedical A/SCannula device
US8152771Oct 15, 2003Apr 10, 2012Unomedical A/SInjector device for placing a subcutaneous infusion set
US8162892Mar 29, 2004Apr 24, 2012Unomedical A/SInjector device for placing a subcutaneous infusion set
US8162896Sep 30, 2009Apr 24, 2012Becton, Dickinson And CompanyFlashback blood collection needle
US8172805Jan 7, 2005May 8, 2012Unomedical A/SInjector device for placing a subcutaneous infusion set
US8172809Jul 15, 2010May 8, 2012Tyco Healthcare Group LpSafety shield apparatus and mounting structure for use with medical needle devices
US8221355Mar 21, 2005Jul 17, 2012Unomedical A/SInjection device for infusion set
US8226617Mar 8, 2007Jul 24, 2012Tyco Healthcare Group LpSafety shield apparatus and mounting structure for use with medical needle devices
US8246588Jul 3, 2008Aug 21, 2012Unomedical A/SInsertion device with pivoting action
US8277408Jul 1, 2003Oct 2, 2012Becton, Dickinson And CompanySafety needle assembly
US8287516Mar 21, 2005Oct 16, 2012Unomedical A/SInfusion set
US8303549Dec 22, 2006Nov 6, 2012Unomedical A/SInjection device
US8430850Jul 2, 2008Apr 30, 2013Unomedical A/SInserter having bistable equilibrium states
US8439838Jun 7, 2007May 14, 2013Unomedical A/SInserter for transcutaneous sensor
US8486003Jul 2, 2008Jul 16, 2013Unomedical A/SInserter having two springs
US8496627Mar 21, 2007Jul 30, 2013Covidien LpPassive latch ring safety shield for injection devices
US8562567Jul 16, 2010Oct 22, 2013Unomedical A/SInserter device with horizontal moving part
US8790311Jun 8, 2007Jul 29, 2014Unomedical A/SMounting pad
USRE37110Jul 15, 1999Mar 27, 2001William H. HollisterLocking safety needle protection system
USRE37252Mar 30, 1999Jul 3, 2001Sims Portex Inc.Safety needle cartridge system
WO2001047589A1 *Feb 15, 2000Jul 5, 2001Luxman Nathan RNeedle cover assembly
Classifications
U.S. Classification604/192, 604/263
International ClassificationA61M5/32
Cooperative ClassificationA61M5/3216
European ClassificationA61M5/32C2D
Legal Events
DateCodeEventDescription
Dec 1, 2000FPAYFee payment
Year of fee payment: 12
Dec 4, 1997ASAssignment
Owner name: LUTHER MEDICAL PRODUCTS, INC., CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LUTHER, RONALD B.;REEL/FRAME:008842/0665
Effective date: 19971030
Aug 30, 1996FPAYFee payment
Year of fee payment: 8
Jul 31, 1992FPAYFee payment
Year of fee payment: 4